MT9VDDT6472AG-335D1 Micron Technology Inc, MT9VDDT6472AG-335D1 Datasheet - Page 10

• Manufacturer Part Number: MT9VDDT6472AG-335D1
• Description: MODULE DDR SDRAM 512MB 184-DIMM
• Manufacturer: Micron Technology Inc

Specifications of MT9VDDT6472AG-335D1

• Memory Type: DDR SDRAM
• Memory Size: 512MB
• Speed: 167MHz
• Package / Case: 184-DIMM
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 557-1137

BA1 = 0) and will retain the stored information until it
is programmed again or the device loses power. The
enabling of the DLL should always be followed by a
LOAD MODE REGISTER command to the mode regis-
ter (BA0/BA1 both low) to reset the DLL.
all device banks are idle and no bursts are in progress,
and the controller must wait the specified time before
initiating any subsequent operation. Violating either
of these requirements could result in unspecified oper-
ation.
DLL Enable/Disable
DLL enable is required during power-up initialization
and upon returning to normal operation after having
disabled the DLL for the purpose of debug or evalua-
tion. (When the device exits self refresh mode, the DLL
is enabled automatically.)
enabled, 200 clock cycles must occur before a READ
command can be issued.
pdf: 09005aef80a43e7d, source: 09005aef80a43d77
DDA9C16_32_64x72AG.fm - Rev. B 9/04 EN
The extended mode register must be loaded when
The DLL must be enabled for normal operation.
Any time the DLL is
128MB, 256MB, 512MB (x72, ECC, SR), PC3200
10
NOTE:
1. BA1 and BA0 (E13 and E12 for 128MB or E14 and E13
2. The QFC# option is not supported.
256MB, 512MB Modules
128MB Module
E12
0
–
for 256MB, 512MB) must be “0, 1” to select the
Extended Mode Register (vs. the base Mode Register).
Figure 6: Extended Mode Register
E11
0 1
14
BA1 BA0
0
–
Micron Technology, Inc., reserves the right to change products or specifications without notice.
0 1
1 1
E10
184-Pin DDR SDRAM UDIMM
13
BA1 BA0
13
0
–
1 1
12
E9
12
A12
0
–
11
11
E8
A11
0
A11
–
Definition Diagram
E7
10
10
0
–
A10
A10
E6 E5
Operating Mode
0
–
9
9
A9
A9
0
–
Operating Mode
8
8
A8
A8
E4
0
–
7
7
A7 A6 A5 A4 A3
A7 A6 A5 A4 A3
E3
0
–
6
6
E2
0
–
5
5
2
E1,
4
4
Valid
–
E0
3
3
2
2
A2 A1 A0
2
A2 A1 A0
2
DS
DS
Operating Mode
Reserved
Reserved
1
©2004 Micron Technology, Inc.
1
E1
0
DLL
DLL
0
0
E0
0
1
Drive Strength
Extended Mode
Register (Ex)
Extended Mode
Register (Ex)
Address Bus
Address Bus
Normal
Disable
Enable
DLL